{"product_id":"fast-v4","title":"Fast V4","description":"\u003cp\u003e\u003cb\u003e■Specs\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 474.716px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 71.1932px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 71.1932px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 71.1932px;\"\u003e\n\u003cp\u003eApprox. 580 g \/ 20.46 oz\u003c\/p\u003e\n\u003cp\u003e60 g \/ 2.12 oz（\u003cspan\u003eShort Sleeper Mat\u003c\/span\u003e）\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 71.1932px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 71.1932px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 71.1932px;\"\u003e\n\u003cp\u003e\u003cspan\u003eDCFH2.92oz\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e200D Spectra X-gridstop Nylon\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38.9773px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 38.9773px;\"\u003eBackpack Size\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 38.9773px;\"\u003eH 65 × W 27 × D 12 cm \/ H 25.6 × W 10.6 × D 4.7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 110.398px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 110.398px;\"\u003e\u003cspan\u003eShort Sleeper Mat Size\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 110.398px;\"\u003e\n\u003cp\u003eH 46 × W 26 × D 1.5 cm \/ H 18.1 × W 10.2 × D 0.6 in（Folded Size）\u003c\/p\u003e\n\u003cp\u003eH 78 × W 46 × D 0.5 cm \/ H 30.7 × W 18.1 × D 0.2 in（Unfolded Size）\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38.9773px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 38.9773px;\"\u003eCapacity\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 38.9773px;\"\u003e29L（Main Compartment: 25L \/ Side Pockets: 2L × 2）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 34.9716px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 34.9716px;\"\u003eSuitable Height\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 34.9716px;\"\u003e165 cm – 179 cm \/ 65.0 – 70.5 in (Varies by body shape)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 34.9716px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 34.9716px;\"\u003eBack Length\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 34.9716px;\"\u003e48 cm \/ 18.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 34.9716px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 34.9716px;\"\u003eShoulder Harness Length\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 34.9716px;\"\u003e48 cm \/ 18.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.0625px;\"\u003e\n\u003ctd style=\"width: 33.3606%; height: 39.0625px;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"width: 66.2784%; height: 39.0625px;\"\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e■Size Guide\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0670\/6751\/0843\/files\/7_ad0f1eaf-bb45-4274-b1ba-b3e39c52b875.jpg?v=1781962530\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0670\/6751\/0843\/files\/6_53262cd5-d8cd-4f1c-8c5f-e4faed47ea39.jpg?v=1781962532\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e■ \u003cspan\u003eIntroduction\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSAYAMA works' backpack development began in earnest in 2018, sparked by a request from an athlete competing in the Trans Japan Alps Race (TJAR)—renowned as Japan's most grueling mountain race. To survive extreme conditions so punishing they induce hallucinations, the design rigorously pursued a symmetrical universal layout, seamless functionality allowing access to essentials without removing the pack, and ultra-lightweight engineering that shaved off every single gram. After a relentless process of creating more than ten prototypes in just six months, the completed model successfully guided the athlete to the finish line.\u003c\/p\u003e\n\u003cp\u003eInheriting the overwhelming DNA of this top-tier racing gear, the \"Fast\" was born from a new challenge: bridging the gap between mountain climbing and everyday life. To overcome the hurdles of mass production for general sale, the brand spent two years collaborating closely with factory planners, repeatedly creating samples and re-engineering the design. By establishing a streamlined production flow meticulously calculated for craftsmanship ease, effortless maintenance, and cost reduction, they successfully brought their ideal vision to life in 2021.\u003c\/p\u003e\n\u003cp\u003eWhile encapsulating the exceptional functionality forged in TJAR, the \"Fast\" has transformed into a simple, beautiful design that blends seamlessly into daily routines. Built with an even greater emphasis on durability than its racing predecessor, it achieves a ruggedness meant to be cherished for years to come. Furthermore, starting with the 2026 \"Fast V4\" model, the shoulder harness features a \"LITTLEAID®\" tag—a testament to their patent-pending innovative idea. The functional beauty born on the extreme ridges continues to evolve, elevating itself into the ultimate tool for everyday adventures.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e■ Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMain Compartment\u003c\/b\u003e: Inherits the silhouette designed for TJAR 2018. The bottom-to-top expanding capacity design delivers high stability and exceptional carrying comfort.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRoll-Top\u003c\/b\u003e: Features a drawcord system for instant access to your gear. Made from 70D ripstop nylon in black to seamlessly conceal dirt.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFront Direct-Access Zipper\u003c\/b\u003e: Centered with a No. 5 YKK water-resistant zipper for direct access to the main compartment. Equipped with highly visible dual silver sliders.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eGrab Loop\u003c\/b\u003e: Positioned on the front side to prevent any interference with your neck.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFront Side Pockets\u003c\/b\u003e: Large-capacity left and right pockets that can be smoothly cinched with one hand. Features heavy mesh for easy visibility of contents, with the side gusset expanded to 4 cm (+2 cm compared to previous versions) to significantly boost storage capacity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBottom\u003c\/b\u003e: Equipped with a multi-functional system to securely fasten sleeping mats or trekking poles. Unified with stain-resistant X-Pac VX21 Black material.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eShoulder Harness\u003c\/b\u003e: Streamlined design for an outstanding fit, equipped with 8 mm thick urethane padding and load lift straps. Features the patent-pending \"LITTLEAID®\" system to prevent slippage, while minimizing bottle interference with your arms (Recommended height: 165 cm – 179 cm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eChest Strap\u003c\/b\u003e: Features an elastic mechanism that does not restrict rib cage movement, paired with a whistle buckle for enhanced safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBack Panel (Torso Length)\u003c\/b\u003e: Utilizes double russell mesh to quickly absorb and diffuse sweat. Prioritizing everyday practicality, the torso length has been increased from the conventional 43 cm to 48 cm.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHip Belt\u003c\/b\u003e: Made of 25 mm high-density nylon that can be detached at any time for daily use. Engineered with modular expandability to dock the new \"Rising\" pack, scheduled for release in 2026.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eReservoir Pocket\u003c\/b\u003e: A hydration-compatible pocket (with a tube port) that can also double as a compact laptop sleeve for daily use. It houses a three-folded mat inside; based on race-proven feedback, the internal divider was eliminated to maximize weight savings. Features easy-to-use dual sliders.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e■ \u003cb\u003eAttention\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"appsItemDetailCustomTag_description\"\u003ePlease note that there may be slight variations in the placement of parts and loops, as different craftsmen handle the sewing for each section. Thank you for your understanding.\u003c\/p\u003e","brand":"SAYAMA works","offers":[{"title":"DCFH2.92oz Black","offer_id":43686717521979,"sku":null,"price":288.75,"currency_code":"USD","in_stock":true},{"title":"DCFH2.92oz White","offer_id":43686717554747,"sku":null,"price":288.75,"currency_code":"USD","in_stock":true},{"title":"Spectra cross diamond Black","offer_id":43686717587515,"sku":null,"price":268.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/6751\/0843\/files\/19.jpg?v=1781948738","url":"https:\/\/hikegear-outpost.com\/products\/fast-v4","provider":"HIKE GEAR OUTPOST \/ CRAFTED IN JAPAN","version":"1.0","type":"link"}